}

func (s *CheckError) Error() string {
	return fmt.Sprintf("#%d: failed on input %s", s.Count, toString(s.In))
}

// A CheckEqualError is the result [CheckEqual] finding an error.
type CheckEqualError struct {
	CheckError
	Out1 []any
	Out2 []any
}

func (s *CheckEqualError) Error() string {